Plot the canonical Energese reference chart

Reproduces Wikipedia's canonical H.T. Odum Energy Systems Language symbol legend (https://commons.wikimedia.org/wiki/File:Energese.jpg, Sholto Maud's Visio stencil) using this package's ggplot2 Geoms. All ten symbols are drawn in the same top-to-bottom order as the Wikipedia chart, each in its own rounded box with its canonical label below.

Usage

plot_energese_reference()

Value

A ggplot object.

Details

Use this to confirm that the package produces faithful Odum ESL geometry, or as a "cheat sheet" figure in publications.

Examples

plot_energese_reference()
#> Warning: Unknown or uninitialised column: `subgroup`.
#> Warning: Unknown or uninitialised column: `linetype`.
#> Warning: Unknown or uninitialised column: `subgroup`.
#> Warning: Unknown or uninitialised column: `linetype`.
#> Warning: Unknown or uninitialised column: `subgroup`.
#> Warning: Unknown or uninitialised column: `linetype`.
#> Warning: Unknown or uninitialised column: `subgroup`.
#> Warning: Unknown or uninitialised column: `linetype`.
#> Warning: Unknown or uninitialised column: `subgroup`.
#> Warning: Unknown or uninitialised column: `linetype`.
#> Warning: Unknown or uninitialised column: `subgroup`.
#> Warning: Unknown or uninitialised column: `linetype`.
#> Warning: Unknown or uninitialised column: `subgroup`.
#> Warning: Unknown or uninitialised column: `linetype`.
#> Warning: Unknown or uninitialised column: `subgroup`.
#> Warning: Unknown or uninitialised column: `linetype`.
#> Warning: Unknown or uninitialised column: `subgroup`.
#> Warning: Unknown or uninitialised column: `linetype`.
#> Warning: Unknown or uninitialised column: `linetype`.
#> Warning: Unknown or uninitialised column: `linetype`.
#> Warning: Unknown or uninitialised column: `subgroup`.
#> Warning: Unknown or uninitialised column: `linetype`.